Hydraulic fluids
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[0052] An aqueous hydraulic fluid of the invention (Formulation A) was prepared by mixing the following ingredients then homogenising this mixture under pressures of between 500-5,000 psi until a stable dispersion was achieved. The resultant product was then filtered to remove any large particles: [0053] 10% w / w Soybean Lecithin, supplied by Cargill PLC, UK [0054] 0.1% w / w Benzotriazole, supplied by Ellis and Everard PLC (UNIVAR), UK [0055] 0.1% w / w EDTA, supplied by BASF PLC, UK [0056] 10% Decanoic Acid(supplied by Multisol, UK) / TEA (supplied by Univar, UK), pre-neutralised salt to pH 8.8 [0057] 5% w / w Triazene, supplied by Thor Chemicals, UK [0058] 40% w / w Monoethylene Glycol, supplied by Ellis & Everard PLC, (Univar), UK [0059] Water to balance
[0060] This formulation, hereinafter referred to as Formulation A, is utilised as a BOP hydraulic fluid concentrate that is diluted by the consumer prior to use, typically to a working concentration of 20% v / v in water and antifreeze mix, ...
example 2
[0074] A second preferred embodiment of the aqueous hydraulic fluid of the invention, Formulation B, was prepared by mixing the following ingredients then homogenising this mixture under pressures of between 500-5,000 psi until a stable dispersion was achieved. Resultant product was then filtered to remove any large particles: [0075] 2% w / w Soybean Lecithin [0076] 0.01% w / w Benzotriazole [0077] 0.01% w / w EDTA [0078] 0.5% Decanoic Acid / TEA, pre-neutralised salt to pH 8.8 [0079] 0.3% w / w Triazene [0080] 40% w / w Monoethylene Glycol [0081] Water to balance
[0082] The above mentioned formulation is hereinafter called Formulation B.
[0083] Formulation B was subjected to the Falex Lupricity Test as described above, and exhibited similar performance to Formulation A. The results showed that Formulation B provided effective water based hydraulic fluid for the off-shore and mining fields.
[0084] The aqueous hydrocarbon fluid of the invention exhibit excellent environmental characteristics, an...
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